Annual mean 15°C · wettest around January · prevailing wind NW
Warmest
24.5 °C
Coldest
13.0 °C
Wettest
31%
Windiest
4.8 m/s
Prevailing
NW
3.6 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in San Jose over the whole year is 15°C. August is the hottest month, with highs of about 24°C; February is the coldest, with lows of about 7°C. The rainy (wet) season in San Jose runs from November to April, peaking in January with a 32% chance of rain on a given day. The dry season is May to October; July is the driest month, at 2%. Winds in San Jose are highest in June, averaging 3.5 m/s (13 km/h), and lightest in November, at 1.8 m/s (6 km/h). The prevailing wind is from the NW. The clearest skies in San Jose come in October, when the sky is typically 26% covered; January is the cloudiest month, at 46%.
Month by month San Jose climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
14°C
8°C
11°C
32%
46%
2.2 m/s
17
0
80
February
15°C
7°C
12°C
31%
36%
2.5 m/s
26
0
78
March
16°C
8°C
12°C
30%
45%
2.7 m/s
31
1
81
April
18°C
10°C
15°C
18%
36%
3.0 m/s
51
4
84
May
20°C
12°C
17°C
14%
38%
3.4 m/s
64
8
81
June
23°C
14°C
20°C
4%
27%
3.5 m/s
73
20
67
July
23°C
15°C
21°C
2%
29%
3.3 m/s
76
27
62
August
24°C
15°C
22°C
3%
31%
3.0 m/s
78
31
56
September
23°C
14°C
22°C
4%
28%
2.6 m/s
78
27
60
October
22°C
12°C
19°C
14%
26%
2.2 m/s
77
16
72
November
17°C
8°C
15°C
20%
32%
1.8 m/s
51
1
87
December
14°C
7°C
11°C
26%
40%
1.9 m/s
17
0
81
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short San Jose weather by season
Year round, San Jose has days of about 14°C at their warmest in January, its coolest month, and 24°C in August, its warmest; the coolest hours of the day run from 7°C to 15°C through the year, and the average temperature over the year is 15°C around the clock. Rain is most likely around January and least likely around July. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
San Jose weather in winterDecember to February
High 14°CLow 7°CRain 30%
Winter in San Jose has typical daily highs of about 14°C and lows of about 7°C, with a 30% chance of rain on a given day.
San Jose weather in springMarch to May
High 18°CLow 10°CRain 20%
Spring in San Jose has typical daily highs of about 18°C and lows of about 10°C, with a 20% chance of rain on a given day.
San Jose weather in summerJune to August
High 23°CLow 15°CRain 3%
Summer in San Jose has typical daily highs of about 23°C and lows of about 15°C, with a 3% chance of rain on a given day.
San Jose weather in autumnSeptember to November
High 21°CLow 12°CRain 13%
Autumn in San Jose has typical daily highs of about 21°C and lows of about 12°C, with a 13% chance of rain on a given day.
When is the rainy season in San Jose?
The rainy (wet) season in San Jose runs from November to April, peaking in January with a 32% chance of rain on a given day. The dry season is May to October; July is the driest month, at 2%.
What time of year is San Jose windiest?
Winds in San Jose are highest in June, averaging 3.5 m/s (13 km/h), and lightest in November, at 1.8 m/s (6 km/h). The prevailing wind is from the NW.
What is the average temperature in San Jose year round?
The average temperature in San Jose over the whole year is 15°C. August is the hottest month, with highs of about 24°C; February is the coldest, with lows of about 7°C.